**svd_lls_test**,
a MATLAB program which
calls svd_lls() to use the SVD to construct and plot the best affine and linear relationships
in the sense of least square, between two vectors of data.

- svd_lls_test.m calls all the tests.
- svd_lls_test.sh runs all the tests.
- svd_lls_test.txt the output file.

- sex_age_height_weight.txt records sex, age, height and weight for 237 students.
- hw_plot01.png plots height and weight.
- hw_plot02.png plots a linear relationship between centered height and weight.
- hw_plot03.png plots an affine relationship between height and weight.